Fight with Sister (MOH)

so, we were supposed to go order the BM dress today, so I had my mom and sister meet me at my house at 6:30. Well, they BOTH called to say that they were running a bit late, and would be there soon, so I ran out to CVS to quickly pick up sometnig, and put a note on the door 'be right back'. When i got bakc they were both there, and they got into my car and my sister immediatly started in, saying 'Where were you, Why did you make us wait?' when I said I had to run quick to CVS, and that i'm sorry, she kept on going on and on about how I made them wait. She was SOOOooo snotty about it, so I got upset, and started crying, and then yelling back at her, and then put the car in park, and said 'i'm not going anymnore... I don't want to go like this'. So my mom said 'sounds like someting else is going on with you' - (UM yeah, I have 4 billion things going on at work, home, my volunteer organization, as well as neen's wedding, AND MY OWN!)... but I was like, MOM you know i'm under stress, and (sister) is just adding to it by being SNOTTY about EVERY single thing!... well, my sister then got out of the car, and said 'well, i'm NOT going to go again' so I said 'fine, than don't be in my BP, I DON'T CARE'...

Well, then she left, and my mom came knocking back at my door (i ran into the house and locked it)... and she was like 'Sue, you over-reacted'.. I OVERREACTED?!?!? SHEEEEEEEEEEEE over reacted!! She has been NOTING but snotty about EVERYTING about this wedding... she has the biggest attitude, like when we were going to go to RK Bridal last Sunday, she was like, 'Oh, that's tomorrow, do we HAVE to go?, I have to clean my room!' HELLOOOOoo my wedding is in 6 months!!!!

I Feel really bad b/c my mom was crying saying that it upset her that she had to witness her daughters saying such horiable things aobut each other, and for that I really am upset but she feels that it was my fault, NOT my sisters...

Now I don't know what to do, b/c weh HAVE to get this dress order in by this weekend (I even am having NEEN go, with only 9 days till her wedding) to get fitted, and my sister pulls this crap!

I'm just so at a loss right now, b/c at this point, I am still angry, and dont' really care if' she even COMES to the wedding let alone be a part of it!... but may regret it later... and my mom said to call her and appoligize, but in my mind I didn't do anyting wrong... she got me upset, so i reacted...

now i'm hysterical, I have a horiable headache, i'm stressed, and just feel like NEVER getting married! it's NOT worth this STRESS!!!!



Thanks for listening to me vent. I need advise